Residential window cleaning across Greater Montréal, streak-free and scheduled.
Altara cleans residential windows across Greater Montréal. Pure-water pole for exterior glass, frames and sills, with interior cleaning as an add-on (squeegee plus microfibre). Streak-free guarantee. Annual and bi-annual programs with automated reminders.
- 5.0Google Reviews
- Streak-FreeGuarantee
- 7,800+Homes Serviced
You hired a window cleaner. The sun hit at 4pm. Every window had streaks.
By the time you noticed, the crew was gone. The "streak-free guarantee" was written but never verified. DIY options take a weekend and fare no better.
Pure-water exteriors. Spot-checked before leaving.
Deionized water on water-fed poles for exterior glass (no mineral residue). Squeegee + microfibre for interior when you add it. Every window inspected with you before the crew leaves.
See how it works →Eight Residential Window Services
From annual whole-home cleans to pre-event polish to post-storm mineral-deposit removal, Altara delivers residential window cleaning across Greater Montréal that keeps the view clear, outside first, inside when you want it.
Standard Window Cleaning
Exterior glass, frames and sills by pure-water pole; interior, screens and tracks as add-ons.
Bi-Annual Program
Spring + fall bi-annual service with automated reminders.
Annual Spring Program
Single annual spring clean. Most common for low-pollen areas.
Pre-Event Window Polish
Same-day or next-day window cleaning before hosting major events.
Post-Storm Deposit Removal
Mineral and rain-spot removal after storms or pollen events.
Screen Washing (Add-On)
Screens removed, washed and reinstalled as an add-on. Tears flagged for you.
Track Cleaning (Add-On)
Window tracks vacuumed and wiped as an add-on to an interior clean.
Skylight Cleaning
Interior skylights standard, exterior case-by-case based on roof access.
Altara Across Greater Montréal
Squeegee leaving a streak-free line on a living-room window
Wiping a window frame and sill by hand
Clean bay windows on a brick home in spring
Washing window screens on a tarp in the backyard
Clear living-room windows looking onto autumn trees
Water-fed pole cleaning a skylight from the groundSix Operational Pillars Behind Every Altara Visit
Pure-Water Exterior
Deionized water on water-fed poles. No minerals, no residue, no streaks.
Streak-Free Inspection
Every window spot-checked with you before we leave.
Exterior Flat Rate
Glass, frames and sills by pure-water pole, screens rinsed in place. Interior is an optional add-on.
Online Flat-Rate Quote
By window count or home size. No in-home quote visits.
Automated Reminders
Annual or bi-annual programs with scheduled reminders.
24-Hour Return Window
Streak spotted later? Contact us within 24 hours, we return free.
Five Steps. Every Visit.
Quote
Tell us your home size or window count. Flat-rate quote in under an hour.
Schedule
Pick a date online. Weather-safe reschedule within one week at no charge.
Exterior
Pure-water exterior cleaning via water-fed pole: glass, frames and sills. Screens rinsed in place.
Interior (add-on)
If you add it: interior squeegee with microfibre detail, screens removed and washed, tracks vacuumed and wiped.
Walk-Through
Streak check with you before we leave. Any streak? Re-wiped immediately.
4-Level Escalation Framework
Streak spotted, missed window, quality issue — here is exactly what happens, and how fast.
Same-day return scheduled for streak or missed window
On-site re-wipe at no charge
Full scope review, corrective plan
Direct escalation with action plan and credit if warranted
Six Commitments That Protect Your View
Streak-Free or Free Return
Streak spotted within 24 hours? We return and re-wipe free of charge.
Pure-Water Exteriors
No tap water, no minerals, no residue-caused streaks.
Pure-Water Exterior Standard
Exterior glass, frames and sills on every visit. Add interior, screens and tracks when you want them.
Flat-Rate Pricing Online
No in-home quotes, no surprise pricing at the door.
Bi-Annual Program Reminders
Automated spring and fall reminders if on program.
7,800+ Homes Cleaned
Residential windows across Greater Montréal, season after season.
Real Results for Real Windows
Family home used a generic cleaner. Averaged 3 return visits per year due to streaks.
Switched to Altara bi-annual with pure-water exterior. Zero streak returns in two years.
Homeowner hosting 80-person outdoor wedding needed pristine windows with 48 hours notice.
Same-day Altara dispatch. 6-hour turnaround. Wedding photos perfect.
Coastal home had 2 years of hard-water sprinkler overspray on exterior windows.
Altara specialty treatment. Stains removed. Switched to bi-annual program to prevent recurrence.
Trusted Across Greater Montréal
Altara walked every window with me before leaving. I spotted a streak, they re-wiped. Nobody does that.
Automated spring reminder. I do not have to remember anything. They just show up and windows are clear.
Pure-water pole for the second-storey exterior. First time I have ever actually seen those windows without streaks.
Three Cities. One Standard.
Plus 26 surrounding areas including Mascouche, Repentigny, Blainville and more.
Frequently Asked Questions
What is included in a standard window cleaning?
The flat rate covers exterior glass, frames and sills, cleaned with pure water on a water-fed pole, with screens rinsed in place. Interior glass, screen removal and washing, and track cleaning are optional add-ons quoted with your booking.
How often should residential windows be cleaned?
Most homes: twice a year (spring and fall). Some homes: annually (spring only). Homes near mature-tree pollen or river spray: 3 times a year. We track your schedule and send reminders.
What does streak-free guarantee mean?
Every window inspected before we leave. If you spot a streak after we leave, contact us within 24 hours — we return and re-clean at no charge.
What about mineral deposits or hard-water stains?
Light mineral spotting usually comes off during a normal pure-water clean. Heavy or long-untouched deposits need a specialty treatment, which is quoted separately.
Do you work in winter?
In Greater Montréal, exterior window cleaning is seasonal (typically March-November). Interior can be done year-round.
What about high windows or three-plus storey homes?
The water-fed pole reaches up to three storeys from the ground, so most homes are standard. Taller homes or difficult access (awkward rooflines, atriums) get a site visit before pricing.
Do you clean skylights?
Yes, from inside if accessible. Exterior skylight access depends on roof pitch and safety — we evaluate case-by-case. Typically included in the service unless flagged as specialty.
Do you serve Laval and the North Shore?
Yes — Laval and the Rive-Nord (Terrebonne, Mascouche, Repentigny, Blainville, Boisbriand, Sainte-Thérèse, Mirabel, Saint-Eustache and surrounding) are core service areas. Same flat-rate quote, same streak-free guarantee, same crews.
Standards We Operate Under
A Window Cleaner That Does Not Make You Inspect Every Window.
Altara was started because most Greater Montréal homeowners who tried residential window cleaning came away with either a DIY weekend of streaks or a professional visit that still had streaks in the afternoon sun.
Pure-water exterior systems. Streak-free guarantee. Interior available as an add-on. Flat-rate pricing online. Serving Laval, the North Shore, Île de Montréal, and the South Shore. Clear view. Every window.
Learn more about Altara →Read our blog →Windows Need a Refresh? Get a Flat-Rate Quote.
Tell us your home size or window count. Flat-rate quote in under an hour. Exterior flat rate, interior add-on available. Streak-free guaranteed. Serving Greater Montréal.